Improved Performance of a PV Integrated Ventilated Façade at an Existing nZEB
Ventilated façades are among the existing measures to reduce the energy demand in buildings. The combination of this passive heating and cooling strategy with photovoltaics (PV) can drive new buildings towards the current European targets near or even to net zero energy Buildings (nZEB). Th...
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| Format: | Article |
| Language: | English |
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MDPI AG
2019-08-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/12/15/3033 |
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| author | Ana Tejero-González Dorota Anna Krawczyk José Ramón Martín-Sanz García Francisco Javier Rey-Martínez Eloy Velasco-Gómez |
| author_facet | Ana Tejero-González Dorota Anna Krawczyk José Ramón Martín-Sanz García Francisco Javier Rey-Martínez Eloy Velasco-Gómez |
| author_sort | Ana Tejero-González |
| collection | DOAJ |
| description | Ventilated façades are among the existing measures to reduce the energy demand in buildings. The combination of this passive heating and cooling strategy with photovoltaics (PV) can drive new buildings towards the current European targets near or even to net zero energy Buildings (nZEB). The present work studies the thermal behavior of the PV integrated ventilated façade applied in the nZEB known as “LUCIA” (acronym in Spanish for “University Centre to Launch Applied Research”) at the University of Valladolid, Spain. The aim is to evaluate the interest of recirculating indoor air within the façade during winter, as an alternative to the present preferred operating mode during the target season, in which the façade acts as further insulation. First, the radiant properties of the PV façade are measured to use the values in a mathematical model that describes the behavior of the ventilated façade in its current operating mode in winter. Then, the solar radiation available, the air-dry bulb temperatures indoors, outdoors and inside the ventilated façade are monitored to obtain experimental data to validate the model. The results show that air recirculation can entail favorable heat gains during 10% of winter, being this alternative preferable to the present operating mode when outdoor temperatures are over 18.4 °C. |
| first_indexed | 2024-04-11T18:17:24Z |
| format | Article |
| id | doaj.art-28e871d12a2648f39ab58b9f8daeb28c |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-04-11T18:17:24Z |
| publishDate | 2019-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-28e871d12a2648f39ab58b9f8daeb28c2022-12-22T04:09:51ZengMDPI AGEnergies1996-10732019-08-011215303310.3390/en12153033en12153033Improved Performance of a PV Integrated Ventilated Façade at an Existing nZEBAna Tejero-González0Dorota Anna Krawczyk1José Ramón Martín-Sanz García2Francisco Javier Rey-Martínez3Eloy Velasco-Gómez4Department of Energy and Fluidmechanics, School of Engineering, University of Valladolid, Paseo del Cauce No.59, 47011 Valladolid, SpainDepartment of HVAC Engineering, Faculty of Civil Engineering and Environmental Engineering, Bialystok University of Technology, Wiejska 45E, 15-351 Białystok, PolandVeolia Australia and New Zealand, 65 Pirrama Road, Pyrmont NSW 2009, AustraliaDepartment of Energy and Fluidmechanics, School of Engineering, University of Valladolid, Paseo del Cauce No.59, 47011 Valladolid, SpainDepartment of Energy and Fluidmechanics, School of Engineering, University of Valladolid, Paseo del Cauce No.59, 47011 Valladolid, SpainVentilated façades are among the existing measures to reduce the energy demand in buildings. The combination of this passive heating and cooling strategy with photovoltaics (PV) can drive new buildings towards the current European targets near or even to net zero energy Buildings (nZEB). The present work studies the thermal behavior of the PV integrated ventilated façade applied in the nZEB known as “LUCIA” (acronym in Spanish for “University Centre to Launch Applied Research”) at the University of Valladolid, Spain. The aim is to evaluate the interest of recirculating indoor air within the façade during winter, as an alternative to the present preferred operating mode during the target season, in which the façade acts as further insulation. First, the radiant properties of the PV façade are measured to use the values in a mathematical model that describes the behavior of the ventilated façade in its current operating mode in winter. Then, the solar radiation available, the air-dry bulb temperatures indoors, outdoors and inside the ventilated façade are monitored to obtain experimental data to validate the model. The results show that air recirculation can entail favorable heat gains during 10% of winter, being this alternative preferable to the present operating mode when outdoor temperatures are over 18.4 °C.https://www.mdpi.com/1996-1073/12/15/3033ventilated façadephotovoltaicsmonitoringmodel validationenergy conservation measure |
| spellingShingle | Ana Tejero-González Dorota Anna Krawczyk José Ramón Martín-Sanz García Francisco Javier Rey-Martínez Eloy Velasco-Gómez Improved Performance of a PV Integrated Ventilated Façade at an Existing nZEB Energies ventilated façade photovoltaics monitoring model validation energy conservation measure |
| title | Improved Performance of a PV Integrated Ventilated Façade at an Existing nZEB |
| title_full | Improved Performance of a PV Integrated Ventilated Façade at an Existing nZEB |
| title_fullStr | Improved Performance of a PV Integrated Ventilated Façade at an Existing nZEB |
| title_full_unstemmed | Improved Performance of a PV Integrated Ventilated Façade at an Existing nZEB |
| title_short | Improved Performance of a PV Integrated Ventilated Façade at an Existing nZEB |
| title_sort | improved performance of a pv integrated ventilated facade at an existing nzeb |
| topic | ventilated façade photovoltaics monitoring model validation energy conservation measure |
| url | https://www.mdpi.com/1996-1073/12/15/3033 |
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